Introduce gr-tooltip-content element and add for draft comment This change introduces an element that can wrap a tooltip around arbitrary contents. Previously, we could only attach a tooltip to a Polymer element, and want more granularity than that for the purposes of positioning. The new tooltip element takes the following arguments: - title (the contents of the tooltip, required) - showIcon (optional, to show an info icon) - maxWidth (optional, to pass a max-width to the tooltip itself). The tooltip itself will be attached to the content inside of the <gr-tooltip-content> wrapper. One tooltip has been added using this new element for the 'DRAFT' text in the gr-diff-comment'. Bug: Issue 4539 Change-Id: Iff05c785052c643ef1f1cc01d101b21c48c6299f

diff --git a/polygerrit-ui/app/elements/shared/gr-tooltip-content/gr-tooltip-content_test.html b/polygerrit-ui/app/elements/shared/gr-tooltip-content/gr-tooltip-content_test.html
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index 0000000..7925c91
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+++ b/polygerrit-ui/app/elements/shared/gr-tooltip-content/gr-tooltip-content_test.html

@@ -0,0 +1,50 @@
+<!DOCTYPE html>
+<!--
+Copyright (C) 2017 The Android Open Source Project
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+-->
+<meta name="viewport" content="width=device-width, minimum-scale=1.0, initial-scale=1.0, user-scalable=yes">
+<title>gr-storage</title>
+
+<script src="../../../bower_components/webcomponentsjs/webcomponents.min.js"></script>
+<script src="../../../bower_components/web-component-tester/browser.js"></script>
+
+<link rel="import" href="gr-tooltip-content.html">
+
+<test-fixture id="basic">
+  <template>
+    <gr-tooltip-content>
+    </gr-tooltip-content>
+  </template>
+</test-fixture>
+
+<script>
+  suite('gr-tooltip-content tests', function() {
+    var element;
+    setup(function() {
+      element = fixture('basic');
+    });
+
+    test('icon is not visible by default', function() {
+      assert.equal(Polymer.dom(element.root)
+          .querySelector('.arrow').hidden, true);
+    });
+
+    test('icon is visible with showIcon property', function() {
+      element.showIcon = true;
+      assert.equal(Polymer.dom(element.root)
+          .querySelector('.arrow').hidden, false);
+    });
+  });
+</script>